Shuttle control for shuttle changing filling mixing looms



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R. G. TURNER SHUTTLE CONTROL FOR SHUTTLE CHANGING FILLING MIXING LOOMS Original Filed May 3, 1934 4 Sheets-Sheet 2 @ci 5, lg. R, G, TURNER 2,056,695

SHUTTLE CONTROL FOR SHUTTLE CHANGING FILLINGMIXING LooMs Original Filed May f5, 1934 4 Sheet's-Sheet 3 l@ E Si i? 6 @I l WT V J S3 `6l F 60 (lttorneq @et 6, T936. R. G. TURNER SHUTTLE CONTROL FOR SHUTTLE CHANGING FILLING MIXING LOOMS Original Filed May 5, 1934 4 Sheets-Sheet 4 lllll gru/enter Rainhard G.Turnev "3". vrue ga Patented Oct. 6, 1936 NITED STATES PATENT OFFICE SHUTTLE CONTROL FUR SHUTTLE CHANG- kING? FILLING MIXING LOOMS Original application May 3, 1934, Serial No. 723,730. Divided and this application October 23,1934, Serial No. 749,581

8 Claims.

This application is a division of my co-pending application Serial No. 723,730, filed May 3,1934.

This invention relates to improvements in filling mixing looms and it is the general object of the invention to provide a shuttle changing loom in which single picks of filling can be mixed.

When Weaving a plain fabric in a loom operating With but one shuttle objectionable shading is likely to result due to the fact that successive supplies of weft may not be exactly alike either as to size or color. Heretofore this has been corrected by using two or more shuttles which run in alternation to mix their respective Wefts. When such looms have been made weft replenishing Vit has been customary to Weave tWo picks of one bobbin followed by twopicks of another.

Where very coarse v'yarns are used the variation in size is likely to be considerable, and with prior practice a ribbed effect may occur. In nonautomatic weaving it is customary to weave such a fabric on a so-called 2 by 2 loom having'two shifting shuttle boxes at each end of the lay. The shuttles are picked in a regular sequence and fol- 10W each other in rotation being each active for a single pick.

In rendering a 2 by 2 loom automatic as to weft supply, I prefer to use aI shuttle changing mechanism rather than a'bobbin changer. In my copending application Serial No. 460,746 I show shifting shuttle boxes at each end of the lay,

those at the magazine end shifting only at the time of renewal of weft supply. Because of these boxes at the magazine end, I fin'd'that by adding to them an extra cell', I can operate inthe usual manner for a 2 by 2 loom, and have an abnormal shift at the time of shuttle change. This modification of `a' principle already proposed by me is found to operate satisfactorily. The three Weaving shuttles all carrying the same kind of -Weft arrive in regular order in the top shuttle box at the magazine side and can be replaced by shuttles drawn from the magazine. All the reserve shuttles in the magazine have Weft of the same kind, so that a single stack of shuttles will suliice.

It has been proposed heretofore to use socalled pick and pick automatic looms having provision for replenishing any one of several shuttles Where any shuttle can be active on any pick for one pick only, if desired. lThe sequence of shuttles already referred to is a specific case of the automatic pick and pick type of loom referred to, examples of which are found in Patent No. 1,674,860 of June 26, 1928 to Gordon and Patent No. 1,605,271, November 2, l1926 to Nelson. In 55 such looms, Where it is desired, the color can be the same for all the shuttles and pickand pick cloth can be Woven automatically by tvvo, three or more shuttles, depending upon the capacity of the loom.

Such looms are bobbin changers, however, and f5. have certain undesirable features. The shuttle is not threaded on the first pick across after transfer and because of this fact the weft is loose and is likely to leave av mark in the cloth. Furthermore, the outgoing' bobbin will usually have its trailing end threaded in the shuttle eye to be drawn back rinto the shed on the first pick after transfer and there are likely to be short double picks unless some special provision is made for handling the thread ends at the time '15 of transfer. In vbobbin changing looms also it is necessary to have a cutter in addition 'to'the selvage trimmer', to remove the thread of the outgoing bobbin which remains threaded in the shuttle. 'l 2O There is still another condition existing in bobbin' changing looms which renders desirable an alteration in the change ofthe center-'filling stop motion. In looms employing shifting boxes at both ends it is desirablel to have a center stop 25 motion to detect weft every beat of the loom, and the stop motion should be as near the center of the cloth as possible, so that detection on all picks will be the same. The thread holder of a bobbin magazine must be set back far enough to assist shuttle threading, and in many looms is in the same vertical plane as `the fell of the cloth. As

the lay moves backwardly the weft will be oblique with respect to the fell, starting from a point considerably behind the fell at the lmagazine end and leaving the shed at'a point muchV farther behind the fell on the side remote from the' magazine. The tines of the center filling fork will ordinarily not be'able to reach this pick lshould the stop motion be central of the lay, and in order `40 to detect on the transferring beat the stop motion is moved off center in a direction toward the magazine. This results in anV uneven character of detection, permitting the fork to be held up by a short end extending in from the magazine end. Should the new thread break at transfer `and a thread end drawnv in by the shuttle, such end might reach the offset fork to support it, and a shift of boxes would permit Weaving past the mispick.

When using shuttle changing looms the threading, pulled-in ends, cutting, and stop motion defects are eliminated. The reserve shuttlesware fully threaded, hence the thread holder can be placed considerably in advance of the fell, and the first pick after change will have the same relation to the stop motion as all other picks. The center stop motion can therefore be placed centrally of the cloth. In shuttle changing looms the outgoing shuttle carries its thread with it, and there is no necessity for cutting at any point other than at they selvage trimmer. This latter can take place several picks after the change. Furthermore, there is no opportunity for pulled in ends.

In the loom described more particularly hereinafter there are two weaving shuttle boxes at each end of the loom which cooperate with three weaving Shuttles to place the shuttles in active position according to a regular sequence with each shuttle active for but one pick. A magazine of reserve shuttles is supplied at one end of the loom and there is located at that end an auxiliary shuttle box which normally does not take part in the regular sequence but which is placed in the path of a depleted shuttle which is moving toward the magazine. Thev means which accomplishes this placing of the auxiliary shuttle box also moves one of the regular weaving boxes into a position where it can receive a fresh shuttlefrom the magazine. The general shuttle changing operation may be substantially the same as shown in my previously mentioned application but one of the weaving shuttle boxes will be located between the auxiliary box and the box which receives fresh shuttles from the magazme.

It is another object of my invention to extend the interval of complete shuttle change so that the movement of the boxes at the magazine end of the loom will be short and this result I accomplish by operating according to a method whereby a shuttle can be picked from the magazine end during the interval occupied by shuttle change, this shuttle being purposely located at the magazine end to facilitate shuttle change although it takes no part in the actual exchange of shuttles.

With these and other objects in view which will appear as the description proceeds, my invention resides in the combination and arrangement of parts hereinafter described and set forth in the claims.

In the accompanying drawings wherein a convenient embodiment of my invention is set forth,

Fig. 1 is a side elevation of the detector end of the loom, the shuttle boxes and part of the lay shown in section,

Fig. 2 is a side elevation of the opposite side of the loom showing a single color magazine, with parts in section,

Fig. 3 is a view similar to the upper part of Fig. l but with the detector in a different position,

Fig. 4 is a plan View looking in the direction of arrow 4, Fig. 3,

Fig. 5 is a diagrammatic view showing a series of shuttle relations setting forth the normal sequence in which the shuttles are picked,

Figs. 6 and '1 show the structure set forth in Fig. 2 in different positions and on a smaller scale,

Fig. 8 is an enlarged vertical section through the shuttle boxes and part of the lay at the magazine end of the loom,

Fig. 9 is a front elevation in the direction of arrow 9, Fig. 8, and FFigz. 10 is a detail vertical section on line Iii-l 0,

Referring particularly tg 1, I have shown a loom frame Il! and a lay l l mounted on swords'- l2. A top shaft I3 moves connectors i4 to reciprocate the lay. A pair of upper and lower shuttle boxes I6 and |11, respectively, are mounted on the upper end of a box rod 18, the lower end 5? of which is connected to a lifting link I operatively related to a cam lever 2t. The lever is.' pivoted at 2l to the loom frame and has a roll Zito cooperate with a box lifter cam 23. The latterl moves with a gear 24 mounted on a stub shan; 25 and meshing with a gear 25 of half its size on the bottom shaft 21 of the loom, By means of upper and lower gears 28 and 29, respectively, see Fig. 2, the top and bottom shafts I3 and 21, respectively, are driven in the usual relation, the top shaft making two rotations for each rotation of the bottom shaft.

By reason of the gearing shown at the lower'l a high dwell 33 and a low dwell 3l connected inclines 32. The effect of theI cam 213 is to hold the boxes l5 and I1 in elevated position with respect to the lay for two picks and then to permit the boxes to move down for the following pair of picks` In this way each shuttle box is rendered active for two consecutive picks and then inactive for the next two picks.

Referring particularly to Fig. 2, the bottom shaft 21 has mounted thereon at the other side 3Q of the loom another box lifter cam 35 having high and low dwells 36 and 31, respectively, connected by inclines 33. A cam lever 39 similar to lever 20 is pivoted at 4% to the loom frame and is connected to a two part link 4l. This link cooperates with a stud i3 on the lever 39 and is pivotally connected indirectly, as at 44, to the bottom of the lifter rod 42. The cam 35 moves with a gear 41 meshing with a gear 48 of half its size, and since the latter gear is secured to the bottom shaft 40- 21, the cam 35 makes a complete rotation every four picks of the loom.

The cam 35 is set so that its inclines 38 operate to shift top and bottom boxes 50 and 5l supported by the rod 42 at a time when the boxes shown Fig. 2 at the opposite side of the loom are at rest.- In other words, the cams 23 and 35, while each rotating in four picks of the loom, are operative to shift their respective boxes at different times so that the boxes at one end of the l-oom are at rest with respect to the lay while the boxes at the other end are shifting. I do not wish to be limited to this particular mode of setting the cams 23 and 35 in the practice of all features of my invention, but I have found that the shuttle sequences produced by such a shift are convenient for the purposes of my present invention.

In Fig. 5 there are set forth twelve different positions of the shuttle boxes, together with three weaving shuttles which are placed in picking position by the boxes according to a definite sequence. The shuttle race R is indicated diagrammatically as dening the path along which the shuttles travel across the loom. Pickers P and picker stick S are indicated diagrammatically in Figs. l and 2 to propel the shuttles which are in picking position, as usual.

For purposes of description, it may be assumed that the shuttles and boxes start as shown in position I, Fig. 5, where shuttles S' and S2 are at the right hand shuttle changing side of the loom with boxes 58 and 5l in low position, and shuttle S3 is in the low box l1 at the opposite detecting 1'side o f the loom, shuttle box l being opposite 'the raceready tol receive a shuttle." TheV positions shown in Fig.` 5v are iridicatedwith the lay can start.

' III the left handboxes rise so that shuttle S3 vcan be picked into bottom box 5|,` leaving box |1 opposite the race.

` As shown in position IV the'lefthandboxes remain up but the right handbox'es havebeen lowered so'that S 'can be picked from^box 5| which is left opposite the race int'oV the lefthand box |1.

Position V shows" the left hand boxes "lowered so that shuttle S2 is moved into action and is picked to the 'right into the top box 50.

Position VI shows the right hand" boxes raised to position shuttle S3 for picking intothe top box l5 at the left'l'iand side.

In position VII the left hand boxes have 'been raised to pick shuttle S to the right side'into box 5|, leaving box |1 opposite the'race.

In position VIII the boxes at the right hand side are lowered and shuttle S2 is picked from box 59 across to the left handl-ower box |1.

In position IX the rightlian-d boxes remain in down position but 'the left hand boxes are'lowered so that shuttle S3can be picked 'out ofthe top left box i6 into'the top right box 59.

` In position X the right'boxes are raised so that shuttle S is picked from box 5| to the left han upper box`|6.

In position XI the left boxes are raised to'place lowerbox |1 opposite therace so"tl'1"at shuttle S2 can be picked from it into the lower'box 5| at the right hand side.

In position XII the left'boxes are retained as they were in position XI but shuttle S3 is'placed opposite the race by lowering the "right boxes and is picked into the bott-om box |1.

Position XIII is the same as position I and it is therefore seen that after a sequence ofV twelve picks theshuttle gets back into the same relative position with respect to the shiftingboxes.

It will be seen by inspecting the different positions of Fig. 5 that at regular intervals leach shuttle will appear at a given point or position in the sequence. As shown in position IV, for instance, shuttle S2 is in raised position in box I6 and four picks later shuttle S3 is in box I6 in raised position as shown at VIII, and in position XII shuttle S is in the raise-d 'top box I6. `This sequence of shuttles is well-known in non-automatic looms and is used for instance in looms for weaving paper machinery felts and also on cam worste-d looms. It will be seen that each shuttle is active for but one pick at a time. An 'auxiliary shuttle box BB is shown dia`g'rarnnatical1y in Fig. 5 but it is normally inactive'and d-'oes not enter into the normal sequence.

The detecting mechanism shown in Figs. l, 3, and 4, comprises brackets 65 secured to the llay and extending backwardly 'therefrom to support small shaft 66. Detector arm 61`is secured to the shaft 96 and has a detector 68 through the body of which extends a` pair of electric detector prongs 69 and 1U,`respectively, insulated from each'other by the'materiai of whichV the body 1s made. These prongs are indicated inIig. 4 as Vconnected electrically to leadwires 1| and 12, respectively,- andvwhen they are electrically connected at weft exhaustion', the following circuit is established, see Fig. 10: Source of electric power E, lead wire 12, prong 10, metallic ferrule on Ybobbin 85, prong 69,`lead wire 1|, solenoid 13, and wire 14 back to the source E. This energization of the solenoid initiates a shuttle change motion of parts to be described.

In order to time the'operation of the detector there'is secured to the inner end of the shaft 66 an actuating arm 15 attached tothe upper end of an operating rod 16. This latter rod is co-nnected to a lever 11, see Fig. 1, having a roll 18 to rest on a cam 19. Cam 19 is secured to the shaft 25 and completes a rotation ever four picks of the loom and this cam has a high dwell 89 which may extend around the greater part thereof. A low dwell 8| is so timed with respect to the box movements at the detector end of the loom as to dip the detector into* the top shuttle box |6 when the lay is rearmo'st just preceding that position of the sequence in which box I6 is to move down from inactive to active position. The shuttle contained by box I6 will therefore be rendered 'active to be picked across to the magazine side of the loom shortly after its condition of weft has been detected.

The time of starting the descent of the detector need not be exactly as described, but should be such as to permit completing of the circuit already describe-d in sufficient time to' permit energization of the solenoid some time prior to the time that lifting of the boxes at the magazine end of the loom can start. While I have designated this position as with the lay at back-'center, yet it could if desired occur when the lay is at some point between top and back center.

It is to be understood that the downward movement of the boxes. will pull the exhausted shuttle away from the detector an-d that the box I6 will be inv low position for two picks. Hence there is. no necessity for a quick return of the detector to its elevated inactive position. This restoration of the detector to its normally lraised inactive position can occur at any time` prior to a subsequent rising of a shuttle in box I6.

At the opposite end of the loom from the deby a bracket 9B secured to the loom frame kand the lowermost shuttle rests on a platform or plate 9| swinging about pivot 92 on the magazine. A setscrew 93 on lever 94 which pivots about center 92 and carries the plate 9i is positioned for engagement with a boss 95 secured to the shifting shuttle box structure which includes the cells 50 The previously mentioned auxiliary shuttle box 60 is located below the cell 5| and all three of these boxes or cells are suppored by and give vertical movements through action of rod 42. A light spring 96 acts to move the plate 9| back to normal position after transferring movement.

A single binder 91 is substantially fixed to the lay to cooperate with the shuttle box which is in active picking position, see Figs. 8 and 9. The binder has top and bottom horns 98 and 99, respectively, which cooperate with the cells above and below the race plate R.

A box cover IUI) forcell 5|) is pivoted as at 19| to a part'of the box and has a lug |02 to engage a cam |03 on the magazine frame when the boxes are in their highest position.

Box rod 42'normally receives movements from the cam 35 to shift cells 50 and 5| so that they will take part in the previously described sequence but this rod is also subject to an additional lifting movement at the time of shuttle change through the action of a lifter latch |65 jpivoted to a regularly moving lever |05 moving :about the center 40. Lever |06 is moved by a cam |07 secured tol the shaft 25 so that it completes a revolution every four picks of the loom. This cam is shaped substantially as shown in the lower part of Fig. 2 and has a low dwell |08 which holds the latch down when the shifting shuttle boxes 50 and 5| are in their low position. The cams 35 and lol turn in the direction indicated at arrow a1, Fig. 2, and a lifting surface |09 on cam |67 leads from the dwell |58 to a high dwell H0. The cams are so related that the lifter .surface |09 comes into action to elevate the latch -fduring those picks of the sequence when cell 5D would normally be in line with the race to relceive the shuttle coming from the detector side of the loom.

In operation, the pairs of weaving boxes at the two ends of the loom will shift in regular or-der to render the three shuttles active as described. Every fourth pick the detector will descend when there is a shuttle in box IE and the latter is` raised. This may occur, for instance, when the loom is between the positions III and IV just before the detected shuttle becomes active. Thelatch |05 and its lever rise regularly at four pick. intervals, being all the way up when the shuttle from box l5 reaches the magazine side. Sc long as enough weft is present in all the shuttles this sequence continues without interruption.

When an empty shuttle is raised by box I6 toward the detector and the latter has descended, a condition will exist such as that shown in position VIII of Fig. 5, where it is assumed that shuttle S3 is being detected and is depleted. The detector will act to close the previously traced circuit and cause the solenoid to throw the latch from the full to the dotted lines in Fig. l0, the latch and its lever being in low position at this time. During the time that the lay is in the forward half of its movement and when shuttle S3 is being lowered from position VIII tov position IX there will be simultaneously a raising of the boxes at the right hand side of the loom so that boxes 56, 5i and 6B will be in the position designated at IX-A, Fig. 5, with auxiliary box aligned with the race. The depleted shuttle S3 will therefore enter this latter box when arriving at the right hand side of the loom.

It is to be understood that the shuttle is picked when the lay is moving rearwardly and in .s-called top center or midway position and that the boxes are in the position IX--A prior to the picking. As the lay moves rearwardly, therefore, the projection |92 will be placed to engage cam |53 to lift the cover of the box 50 and lug 95 will be placed to engage the screw S3 to move the plate 9| rearwardly, and as the lay reaches its rearmost position the bottom reserve shuttle of the magazine will drop into the top box 50. It is this box 50 which shuttle S3 would normally enter were its supply unexhausted, and it will be seen therefore that by applying a fresh shuttle into this box the sequence can be reestablished after the temporary interruption accompanying shuttle change.

The boxes at the magazine end of the loom will vsacrifices remain in their highest position until the lay reaches bottom center, after which these boxes will be .lowered one step by action of surface ||2 'on cam. |01 and lever |86 so that box 5| is aligned with the race. Since shuttle S3 was last picked it is .now the turn of shuttle S to be picked and this shuttle is in the middle box This one- :s'tep down motion, which is as slow and easy as the usual box shift will therefore place shuttle 5S in picking position so that it will be driven to the left hand side of the loom as indicated in position X. The boxes at the magazine side of -the loom remain in this position for another pick, lever 39 having returned to high dwell '36 to be supported thereby as the latch continued down, so that shuttle S2 can be picked back to the magazine .side as indicated in position XI, whereupon box 50 is lowered to render new shuttle S3 active.

It is this downward movement of the boxes to place the freshly inserted shuttle into action which lowers auxiliary bo'x Gil and depleted old shuttle S3 to discharging position below the depending ;orongs of the binder. On the forward motion of the lay, therefore, the depleted shuttle will be ejected forwardly into any form of receiver not shown` This particular mode of ejecting the exhausted shuttle, as well as the mechanism for applying a fresh reserve shuttle to the box 5B, may be as set forth in my copending application Serial No. 460,746 and the magazine and associated parts may if desired be more particularly as shown in' Chevrette Patent No. 1,834,302.

During the actual transfer of the shuttle from the magazine to the box 5D the lowest reserve :shuttle together with all those resting on it will drop when the plate 9| is in back position. As the lay moves forwardly, however, the plate 9| will advance to move under the next lowest maga- :zizne shuttle before the latter is entirely unsupported by the shuttle being changed.

While I have shown the weft detector as associated with the top box on the left hand side of 'the loom, yet I am not necessarily limited to this position of the detector inasmuch as it could be placed to detect in the bottom shuttle on the left hand side if desired. A corresponding reversal of the movements of the boxes at the right hand side of Fig. 5 would place the shuttles correctly for operation under 'this alternative arrangement. The point to be borne in mind is that the shuttle which is being detected when next active should be picked into the top box at the magazine side of the loom.

From the foregoing it will be seen that I have provided a shuttle changing loom wherein each of three shuttles is active for but one pick at a time according to a predetermined normal sequence and that means are provided for interrupting this sequence at the time of weft exhaustion to move one of the normal weaving boxes which is temporarily empty into receiving relation with respect to the magazine, and to place a normally inactive auxiliary box in position to receive the exhausted shuttle. By two separate subsequent single box downward motions the boxes at the magazine side act first to permit picking of the shuttle which is in box 5| and unaffected by transfer and then the freshly inserted shuttle is rendered active and the depleted shuttle expelled. These two steps avoid a quick two box shift which might interfere with proper shuttle changing motions. The outgoing shuttle is moved forwardly so that its thread which extends to the selvage does not cross the path of the active shuttles, andthe freshly inserted reserve shuttle is fully threaded so that the tension of the first pick is normal. No selvage cutter has been set forth herein but any of the wellknown mechanisms of this type can be. employed and can be set to cut at any desired time without regard to the replenishing interval.

I have found that under certain conditions the shuttles which are in boxes 56 and 60 may tend to move inwardly toward the cloth when these boxes are not opposite the stationary binder. In order to prevent such a creeping of the shuttles I provide a roll carrier |20, see Figs. 8 and 9, having upper and lower rolls |2| and |22, respectively, which are urged toward the shuttles by a light spring |22. This spring may be secured to the stationary binder as shown in Fig. 9 and is forked to straddle a boss |23 on the binder passing through an opening in the carrier |25). By this arrangement the carrier is permitted a certain freedom of motion and the rolls can be made of some friction material such as rubber to exert a slight resistance to endwise motion of the shuttles.

Having thus described my invention it will be seen that changes and modiiications may be made therein by those skilled in the art without departing from the spirit and scope of the invention and I do not wish to be limited to the details herein disclosed, but what I claim is:

l. In a shuttle changing loom, a lay, a reserve shuttle magazine adjacent one end of the lay, three shifting shuttle boxes on said lay each capable of being moved into active position with respect to the lay, and a single binder substantially stationary with respect to the lay to cooperate with any box in active position, said binder having parts to extend upwardly into operative relation with one of the shuttle boxes above active position and having other parts to extend downwardly into operative relation with the other shuttle box when the latter is below active position.

2. In a shuttle changing loom, a lay, a reserve shuttle magazine adjacent one end of the lay, three shifting shuttle boxes on said lay each capable of being moved into active position with respect to the lay, a single binder substantially stationary with respect to the lay to cooperate with any box in active position, and means supported by and movable relatively to the binder to prevent shuttles in the adjacent inactively positioned boxes from moving longitudinally.

3. In a shuttle changing loom operating with a plurality of weaving shuttles, a lay, a reserve shuttle magazine adjacent one end of the lay, three shifting shuttle boxes on the lay each movable to active position relatively to the lay and one of said boxes capable of receiving a reserve shuttle from the magazine, a single binder on the lay to cooperate with any shuttle box in active position, a carrier on the binder extending above and below the latter, and a pair of shuttle engaging rolls on the carrier, one above the binder to cooperate with a shuttle in a box above the lay and the other below the binder to cooperate with a shuttle in a box below the lay.

4..In a shuttle changing loom operating with a plurality of weaving shuttles, a lay having a shuttle race, a r-eserve shuttle magazine adjacent the shuttle boxes, three shuttle boxes each movable relatively to the lay to active position opposite the shuttle race, a single binder supported by and substantially stationary with respect to the lay, a carrier on the binder, a roll on the carrier positioned to cooperate with a shuttle in a shuttle box above the racea second roll on the` carrier to cooperate with a shuttle in a shuttle box below the race, the lowestb'oxfbeing below the second roll to permit a shuttle to move out of said box transversely ofthe latter when the boxes are in lowest position,`.,and .the top box being above the first roll toreceive'a reserve shuttle from the magazine when the lowest box is in active position.

5. In a shuttle changing loom operating with a plurality of weaving shuttles, a lay having a shuttle race, a reserve shuttle magazine adjacent the shuttle boxes, three shuttle boxes each movable relatively to the lay to active position opposite the shuttle race, a single binder supported by and substantially stationary with respect to the lay, a carrier on the binder, an element on the carrier above the binder to cooperate with a shuttle in a shuttle box next above the box in active position, a second element on the carrier below the binder to cooperate with a shuttle in a shuttlebox next below the shuttle box in active position, the lowest shuttle box being below the second element when the top box is active to permit forward ejection of a shuttle from the lowest box, and the top shuttle box being above the iirst element to receive a reserve shuttle from the magazine when the lowest shuttle box is active.

6. In a shuttle changing loom having a lay with a shuttle race and operating with a plurality of weaving shuttles, three shifting shuttle boxes movable relatively to the lay so that each box is movable to active position relatively to the shuttle race, a single binder mounted on the lay and substantially stationary with respect thereto and located to cooperate with any shuttle box actively placed with respect to the shuttle race, a carrier supported by and movable relatively to the binder, a spring carried by the binder and holding the carrier yieldingly toward the shuttle boxes, an upper friction element supported by the carrier to extend above the binder and cooperate with a shuttle box next above the box in the active position, a lower friction element supported by the carrier to cooperate with a shuttle box in the position next below a shuttle box in active position, said shuttle boxes shiftable to present the lowest shuttle box in active position and raise the top box above the upper friction element to receive a reserve shuttle, said shuttle boxes thereafter shiftable to lowest position with the top shuttle box active and with the lowest shuttle box below the lower friction element to permit forward discharge of a shuttle from the lowest box.

'7. In a shuttle changing loom having a lay with a shuttle race and operating with a plurality of weaving shuttles, a reserve shuttle magazine, three shuttle boxes shiftable relatively to the lay and each movable into active position with respect to the shuttle race, a single binder carried by the lay to cooperate with the shuttle box in active position, means supported by and extending vertically in opposite directions from the binder to cooperate with those shuttles only which are in shuttle boxes adjacent active position, the top box being movable vertically to a position above that position adjacent the active position to receive a reserve shuttle' from the magazine, and the lowest shuttle box movable to a position below the shuttle box adjacent and below the active position for the ejection forwardly of a depleted shuttle.

8. A loom binder for an intermediate box of a gang of shuttle boxes having a. box above and ond friction element supported by the carrier in another box below the intermediate box, said a position below the binder, the friction elements binder having a body and a carrier extending being positioned to engage shuttles in boxes adabove and below the binder and supported by jacent to the intermediate boxes.

5 the latter, a friction element supported by the carrier in a position above the binder, and a sec- RICHARD G. TURNER. 

